Fountain pen



Dec. 18 1923 E. D. WINTERSTEEN FOUNTAIN PEN- Filed May 18 [nvenZ'or:Edward inZ'ersZeer?,

.nectady,

Patented Dec. 18, 1923.

.PATENT Trios.

EDWARD D. WINTERSTEEN, F SCHENECTADY, `NEW YORK.

FoUN'rAIN PEN..

'Appncauon'lmed may 1s,

To all fugvhom t may concern:

Be it known that I, EDWARD D. WINTER- STEEN, a citizen of the UnitedStates, residing at Schenectady, in the county of Sche- State of NewYork, have invented certain new and useful Improvements in FountainPens, of which the following is a 4 specification.'

' vice embodying The present invention comprises a new fountain penconstruction whereby the cap of the pen may be securely locked upon thebarrel without any attention or thought by the user other than th'eusual and habitual act of replacing the ca upon the barrel.

It is desirable that t e cap and barrel of a fountain pen carried in apocket or bag should be protected from injury resulting fromaccidentally unscrewing7 case of chatelaine fountain pens, which arecarried on a chain or cord, unscrewing of the cap and barrel is likelyto result in loss of the barrel.

In accordance with my invention I have provided an inconspicuous lockingdevice which prevents unintentional disengagement of the cap from thebarrel.l The locking demy invention is automatically set in alockingposition by the user when the cap is placed in closed positionand is released by the pressure ofthe fingers when holding the pen tounscrew the cap. f

The novel features of my invention will be set forth with greaterparticularity in the appended claims.

The accompanying drawings illustrate in Fig. 1 partly in longitudinalsection, a pen embodying my invention with the parts disengaged; Fi 2Ysimilarly illustrates the same parts w en in'engagement, and Fig. 3 isan enlarged cross-section of the pen on the lines 3-3 of Fig. 2.

The fountain pen shown in Fig. 1 comprises the usual elongated barrel 1provided at one end with a pen 2, communicating with an ink reservoir 3through a feeding Adevice 4. As the pen and feeding device form no partof my present invention they require no further description. The cap 5'iits over the pen 2, and is intended to be held in this position, whenthe pen is not in use by the engagement of the screw threads 6 upon theinterior` surface of the end of the cap with the threads .7 upon theexterior surface of the barrel. The cap 5 is usually and in the 1923.-seriai No. 639,949.

also provided with a clip or holder 8 which engages with the pocket ofthe user, or is held by a ring 9 (indicated in Fig. 1 by dotted lines)through which a chain 0r cord may be passed.

No matter whether a pocket clip ora ring holder is used, the barrel ofthepen in either case is suspended from the cap and hence the ordinarymotion of the body of the wearer is apt to cause the barrel to becomeunscrewed. When the pen is carried in the pocket this may damage the penpoint and cause soiling of the pocket with ink and when the pen issuspended by a chain or cord attached to the cap, the unscrewing of thecap is apt to cause a loss of the barrel.

In accordance with m linvention disenagement of the cap and arrel isprevented y the engagement of -a pawl, constituted by a spring blade 10carried by the barrel, with the ratchet teeth 11 on the inner surface ofthe mouth of the cap. These teeth may be molded directly in the capwhich may con sist of hard rubber, bakelite or other suitable material,or the toothed end of the cap mag consist of metal.

s best shown in Fig. 3, the ratchet teeth barrel but prevents unscrewingof the barrel. The thin, narrow, resilient blade which is mounted at oneend by rivets 12 upon the barrel 1 has a slight spring outwardly so asto stay normally in engagement with the ratchet teeth but permitting itto be depressed by the lingers out of engagement with the ratchet teeth,when the cup is to be unscrewed.

Although I have described and claimed my invention with particularreference to fountain pen construction, it is obvious that the benefitsof my invention are not necessarily confined to a pen. Other instrumentsmay be similarly constructed.

What I claim as new and desire to secure `by Letters Patent of theUnited States, is

Q remue? members permitting said cap to be screwed mounted upon saidbarrel so as to' engage upon said barrel but resisting unserewing withsaid ratchet teeth, said teeth being therefrom. shaped to permit Saidcap to be screwed 3. A fountain pen comprising a barrel upon said barrelbut resisting unsorewing 5 having an external threaded portion, a capand a mounting for said pawl permitting R5 having an internal threadedportion which release thereof by pressure. maybe screwed into engagementwith the 1n Witness whereof, I have hereunto set external threadedportion, of saidv barrel, my hand this lth day of May, 1923. ratchetteeth upon the ,interior surface of 10 said cap and a pawl of resilientmaterial EDWARD D. `WINTERSTEEN.-

